Sifter for flour-bins.



H. A. HALL. SIFTER FOR FLDUR BINS.

APPLICATION FILED JUNE z, 1913.

LG75A'MB Patnted 00111451913.

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v fIQR Y 19'. /7'/11 1 HTTOff/YE r5 COLUMBIA PLANOGRAPH co., WASHlNGTON,D. c4

nanny A. HALL, or

NEVJOASTLE, TNDIANA, ASSIGNOR TO HOOSIER MANUFAC- ronine COMPANY, ornnwoas'rnn, INDIANA, A conronarron or rnnrana.

SIFTEE FOR FLOUR- BINS.

Specification of Letters Patent.

Patented Get. 14, 1913.

Application filed June 2, 1913. Serial No. 771,350.

To all whom 2'25 may concern Be it known that T, HARRY A. HALL, acitizen of the United States, residing at Newcastle, in the county ofHenry and State of Indiana, have invented certain new and usetulImprovements in Sitters tor Flour-Bins, ot which the following is aspecification.

This invention relates to flour sitters which are particularlyapplicable tor use tor sitting flour tor domestic purposes in kitchencabinets, and the like. The prevailing structure tor this purpose,heretotore, has been a hemispherical wire sieve within which suitablycurved stirring wires have been rotated. In this construction the wirereel is likely to grind up any toreign substance or flour lumps andtorce them through the sieve.

The object 0t this invention is to provide a reversible rotary sitterwherein the motion of the wire screen sitts the flour instead ot theflour being ground through the sieve wire by the action ot a wire reelas heretotore and consequently any foreign substance which is too largeto go through the sieve will remain in the basket until the flour bin isempty when the sitter basket can be removed tor cleaning.

A further object ot the invention is to provide a removable sitterbasket and also to greatly increase the operative speed of the sitter.

A further object is to prevent the unsitted tlour trom working down fromthe outside ot the sievebasket and to compel all of the flour to gothrough the sieve basket to be sitted.

Another object of the invention is to provide a simple, inexpensive anddurable sitt ing device which is adapted to be readily attached to andremoved from the flour bin.

1 accomplish the above objects by the mechanism illustrated in theaccompanying drawing, in which- Figure l is a vertical section of thelower end of a flour bin with my improved sitting mechanism applied inoperative position thereto, the section being on the line 1-1 of Fig. 3.Fig. 2 is a section. at right angles to that of Fig. 1 showing the yokeand eccentric wheel mechanism. Fig. 8 isv a transverse horizontalsection on the line 33 of Fig. 2. Fig. 4 is an elevation of the lower,end of the flour bin with a modified form of my invention applied to thebin, and Fig. 5 is a vertical section ot this modified structure on theline 55 ot Fig.

Like characters ot reference indicate like parts throughout the severalviews ot the drawing.

A tour bin 6 of any usual size and torm is provided with a hopper 7which terminates with an annular vertical iiange 8 around its dischargeopening.

10 is the body of the sitter, 0t usual form, within which my improvedmechanism is assembled. This body is here shown as tunnel shaped andprovided with a vertical flange 11 which makes a close sliding fitoutside ot the flange 8. The flange 11 will be secured to the hopper 7in a removable manner by any of the usual and suitable means. Thereduced discharge opening at the lower end of the tunnel-body 10 issurrounded by a vertical flange-ring 12.

Secured to the inner walls ot the body 10 and extending diametricallyacross the latter is a plate 13, portions 0t which are formed and bentto term horizontal flanges 14 and 15, located at the upper and loweredges, respectively, of the plate 13. These flanges are pertorated toreceive a vertical shatt 16 and torm the journals tor said shatt.Secured near the upper end of the shaft 16 is a horizontal bar 17, the.outer ends of which are turned up. at right angles and support a metalring 18. Depending trom and supported by the metal ring 18, and also bythe bar 17 is a woven wire sieve-basket 19, the bottom of which willpreferably be substantially flat and the sides vertical and at rightangles to said bottom. The sieve-basket 19 will rotate with the shatt 16when the latter is rocked.

Located between the lower end ot the shatt l6 and the flange 12 is adamper-plate 20 which is hinged at 21 and has an opposite projectingportion 22. T his damperplate is adapted to be moved horizontally in andout ot the body 10 to open and close the discharge through the bottom ofsaid sitter body. Leakage through the slot in the body 10 through whichthe damper-plate is operated, is prevented by a tunnel shaped flange 23located above the plate within the body 10, as shown.

Supported from the flange 11, outside 01? the sitter body is a gear case2 1, and sup ported by the gear case and by the body 10 is a horizontalshaft 25 which terminates within the gear case and has mounted on thatend of it a pinion 26, the teeth of which are in mesh with a larger spurgear wheel 27, also mounted in said gear case on a shaft which iscontinued outside of the gear case and is bent to form a crank 28terminating with a handle 29.

Mounted eccentrically upon the shaft 25, within the body is a wheel 30which is preferably integral with a concentric wheel 31. The wheel 31acts as a fly Wheel for the gear mechanism.

Supported by and depending from the horizontalsieve bar 17 is a yoke 32,the two members of which straddle the eccentric wheel 30 with the resultthat when the latter is rotated an oscillatory movement will be impartedto the bar 17 thereby vibrating the sieve-basket and oscillating theshaft 16.

Secured to the flange 8 of the hopper 7 within the flange, and above thesievebasket is a feeding ring 33 which comes down over the basket so nounsifted flour can work down on the outside of the basket.

By the mechanism thus far described by the application of a continuousrotary power applied to the handle 29, a reversible rotary motion willbe imparted to the sieve-basket 19, and the flour will be sifted throughthe sieve but all large and undesirable substances will be retained inthe basket, and when the bin is empty the body 16 can be readilyremoved, and the sievebasket lifted out and emptied.

In the modification shown in Figsr l and 5, the shaft is formed with acrank instead of having the eccentrically mounted wheel 80, and thepinion 26 on the outer end of the shaft 25 is rotated by means of asegmental rack 34: having a handle 35 by which it is oscillated. Theconstruction otherwise is the same as for the device illustrated inFigs. 1 to 3 inclusive, and the operation will be understood withoutfurther description.

While I have described my invention with more or less minuteness asregards details of construction and arrangement, and as be ing embodiedin certain precise forms, I do not desire to be limited thereto undulyor any more than is pointed out in the claims. Un the contrary, Icontemplate all proper changes in form, construction and arrangement,the omission of immaterial elements, and the substitution of equivalentsas circumstances may suggest or necessity render Xpedient.

I claim:

1. The combination with a flour bin having a bottom outlet and a hopperleading basketto which the basket is secured, said shaft being supportedby the shaft supporting means of said plate, a hand crank, and meansoperated by the crank for oscillating said sieve-basket.

8. The combination with a flour bin having abottom outlet and a hopperleading thereto, of a sifter-body removably secured to the bin, asieve-basket removably mounted within the sifter body, a yoke dependingfrom the sieve-basket, a hand crank, a second crank passing through theyoke and having means to contact with the yoke to oscillate thesieve-basket when the shaft is rotated and a gear means connecting thelast shaft with the crank shaft.

4. The combination with a flour bin having a bottom outlet and a hopperleading thereto, of a Sifter-body secured to the bin, a sieve-basketmounted within the sifterbody, a yoke depending from the sievebasket, ahorizontal shaft passing through the yoke, means on the shaft to contactwith the yoke and oscillate the sieve-basket when "the shaft is rotated,a second shaft having a hand crank and gear means between the twoshafts.

5. The combination with a flour bin having a bottom outletand a hopperleading thereto, of a Sifter-body removably secured to the bin, avertical shaft removably secured within the sifter-body, a circularsievebasket supported by said shaft, a yoke depending from thesieve-basket, a shaft passing through the yoke and having an eccentricwheel between the members of the yoke, a hand crank shaft and gearsconnecting the hand crank shaft with the shaft which passes through theyoke.

In witness whereof, I have hereunto set my hand and seal at Newcastle,Indiana, this, Qth day of May, A. D. one thousand nine hundred andthirteen.

HARRY A. HALL. [L. s] Witnesses C. E. LAMB, J

. Vi'niKns Cami.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of f atents, Washington, D. 0.

